Patents by Inventor Sam B. Ledbetter, JR.

Sam B. Ledbetter, JR. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Compositions for oil recovery and methods of using same
    Publication number: 20090145809
    Abstract: A method of removing bitumen from tar sands comprising contacting the tar sands with a first mixture comprising a petroleum distillate and an oxygenated solvent, and recovering a second mixture comprising (a) at least a portion of the petroleum distillate and oxygenated solvent from the first mixture, (b) bitumen and (c) sand having a reduced amount of bitumen.
    Type: Application
    Filed: December 10, 2007
    Publication date: June 11, 2009
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Sam B. Ledbetter, JR., Marshall D. Bishop, Bharat B. Patel